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added better description and correct init value for the threshold parameter

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Paolo Cignoni cignoni 2009-09-06 08:07:42 +00:00
parent 0f4f4b12bf
commit eadcf85031
1 changed files with 7 additions and 6 deletions
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13
src/fgt/filter_qhull/filter_qhull.cpp
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@ -95,7 +95,7 @@ const QString QhullPlugin::filterInfo(FilterIDType filterId) const
"The Delaunay triangulation DT(P) of a set of points P in d-dimensional spaces is a triangulation of the convex hull "
"such that no point in P is inside the circum-sphere of any simplex in DT(P).<br> ");
case FP_QHULL_VORONOI_FILTERING : return QString("Compute a <b>Voronoi filtering</b> (Amenta and Bern 1998) with Qhull library (http://www.qhull.org/). <br><br>"
"The algorithm calculates a piecewise-linear approximation of a smooth surface from a finite set of sample points."
"The algorithm calculates a triangulation of the input point cloud without requiring vertex normals."
"It uses a subset of the Voronoi vertices to remove triangles from the Delaunay triangulation. <br>"
"After computing the Voronoi diagram, foreach sample point it chooses the two farthest opposite Voronoi vertices."
"Then computes a Delaunay triangulation of the sample points and the selected Voronoi vertices, and keep "
@ -155,11 +155,12 @@ void QhullPlugin::initParameterSet(QAction *action,MeshModel &m, RichParameterSe
}
case FP_QHULL_VORONOI_FILTERING :
{
parlst.addParam(new RichDynamicFloat("threshold",0.0f, 0.0f, 2000.0f,"threshold ","Factor that, multiplied to the bbox diagonal,"
"set a threshold used to discard the voronoi vertices too far from the origin."
"They can cause problems to the qhull library.<br>"
"Growing values of 'threshold' will add more voronoi vertices for a better surface"
"reconstruction."));
parlst.addParam(new RichDynamicFloat("threshold",10.0f, 0.0f, 2000.0f,"Pole Discard Thr",
"Threshold used to discard the Voronoi vertices too far from the origin."
"We discard vertices are further than this factor times the bbox diagonal <br>"
"Growing values of this value will add more Voronoi vertices for a better tightier surface reconstruction."
"On the other hand they will increase processing time and could cause numerical problems to the qhull library.<br>"
));
break;
}
case FP_QHULL_ALPHA_COMPLEX_AND_SHAPE: